1
KCET 2020
MCQ (Single Correct Answer)
+1
-0

In the following circuit what are P and Q

KCET 2020 Physics - Semiconductor Devices and Logic Gates Question 4 English

A
$$P=1, Q=0$$
B
$$P=0, Q=1$$
C
$$P=0, Q=0$$
D
$$P=1, Q=1$$
2
KCET 2020
MCQ (Single Correct Answer)
+1
-0

A positive hole in a semiconductor is

A
an anti-particle of electron
B
a vacancy created when an electron leaves a covalent bond
C
absence of free electrons
D
an artificially created particle
3
KCET 2019
MCQ (Single Correct Answer)
+1
-0

The conductivity of semiconductor increases with increase in temperature because

A
number density of charge carriers increases
B
relaxation time increases
C
both number density of charge carriers and relaxation time increases
D
number density of current carriers increases, relaxation time decreases but effect of decrease in relaxation time is much less than increase in number density
4
KCET 2019
MCQ (Single Correct Answer)
+1
-0

For a transistor amplifier, the voltage gain

A
remains constant for all frequencies
B
is high at high and low frequencies and constant in the middle frequency range
C
is low at high and low frequencies and constant at mid frequencies
D
constant at high frequencies and low at low frequencies
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